Frequencies for first 10,000 rows of drg1ing5 variable in namcs1998 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,941       99.41       99.41
      54590 |          1        0.01       99.42
      54860 |          1        0.01       99.43
      55348 |         13        0.13       99.56
      55815 |          1        0.01       99.57
      56185 |         39        0.39       99.96
      56192 |          1        0.01       99.97
      56193 |          2        0.02       99.99
      56345 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016